ML18030A120

Notifies of Potential Deficiencies Er 100450 & Er 100508 Re States Co Sliding Links.Failure Occurs in Form of Crack Between Threaded Screwhole & Side of U-shaped Link.Will Advise of Date of Final Rept

ML18030A120
Person / Time
Site:	Susquehanna
Issue date:	06/23/1980
From:	CURTIS N W PENNSYLVANIA POWER & LIGHT CO.
To:
References
ER-100450, ER-100508, PLA-499, NUDOCS 8006270342
Download: ML18030A120 (4)

Text

REGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:8006270342OOC,DATE:80/06/23NOl'ARIZEO:NOFACIL:usauehannaSteamElectricStationiUnit1rPennsylva-38'ouehannaSteamElectricStationPUnit2IPennsylvaA'~AUTHORAFFILIATIO'TlCSPN.i'I~PennsylvaniaPowerilLightCo~RECIP.~A:.ERFCIPIFNTAFFILIA7IONDOCKET¹0500038705000388

SUBJECT:

NotifiesofPotentialOeficienciesER100450FER100508reStatesCoslidinglinks.FailureoccursinformofcrackbetweenthrcededscrewholeLsideofUshaoed1ink,&i11adviseofdateoffinalrept'ISTRISUTTUNCOOS:8019SCOPIESRECEIVES:LTRgENCLQSIZESJBTIl'LF:ConstructionDeficiencyReoort(10CFR50~55E)BOOTES:~gWM~3Q~)re~+~~RECIPIENTIODOE/i"JAETREACTION:ADI()Q~Ar~+2120rIuTlR~.'AL:AC/RCI/IEEOORSTAFF07FIELOCOOR/IE13HYD/GEOBR22-LICQUALBR<PA08VELD23PRCTSl'EVBRG01COPIESLTTRFNCLRECIPIE'TiTIOCODE/'TiA'4EBCpvry+~odd15PHAEODEQUIPQUALBR16HANAUERPS~IRE05MOOREEV~NRCPDR02,ORASSESSBR17QABR10STANORDSOEV11COPIESLTTREN11EXTERNAL'CRSNSIC24041611LPOR03due3p>F800TOTALNUi!BEROFCOPIESREQUIRED:LTTR41ENCL1 0TWONORTHNINTHSTREET,ALLENTOWN,PA.18101PHONE:(215)821-5151NORMANW.CURTISVicePresidentEngineering8Construction821-5381June23,1980Mr.BoyceH.GrierDirector,RegionIU.S.NuclearRegulatoryCommission631ParkAvenueKingofPrussia,Pennsylvania19406SUSQUEHANNASTEAMELECTRICSTATIONNOTIFICATIONOFAPOTENTIALDEFICIENCYONSTATESCOMPANYSLIDINGLINKSERs100450/100508FILE840-4PLA-499

DearMr.Grier:

ThisletterservestoconfirminformationprovidedbytelephonetoNRCInspectorMr.R.McGaughybyMr.A.R.SabolofPP&LonJune17,1980.Duringthatconversation,Mr.McGaughywasadvisedthatthesubjectconditionwasbeingevaluatedforreportabilityundertheprovisionsof10CFR50.55(e).ThedefectinvolvesthefailureoftheU-shapedlinkontheStatesCompanyslidinglinkterminalblock.ThefailureoccursintheformofacrackbetweenthethreadedscrewholeandthesideoftheU-shapedlink.TheU-shapedlinkandassociatedspacerformsaconnectionbetweentwoslottedbarsontheterminalblockwhenthespacerandlinkaretightenedbyascrew.Whenthescrewistightenedacrackmayresultwhichcancauseanopenorapoorelectricalconnection.Sincetheselinksareusedonsafetyrelatedequipment,thedefectiveconditionhasbeenevaluatedaspotentiallyreportableundertheprovisionsof10CFR50.55(e).ThesubjectdefecthasalsobeenpreviouslyrecogniedbytheNRCandwasdescribedinyourInformationNotice80-08issuedonMarch7,1980.BechtelhasunderdevelopmentasamplingprocedurewhichincludesguidancefortheirQualityControlfieldorganizationtoinspectthelinks.ThePP&LIntegratedStartupGroupwillalsobeinstructedtofollowtheguidanceoutlinedinthesamplingplanwhenevertheyoperatethelinksduringpreoperationaltestingactivities.Weexpectthisapproachtoprovideuswithquantitativeinformationontheextentofthedeficiency.8OO6S7o>~Sincethedetailsofthisreportprovideinformationrelevanttothereportingrequirementsof10CFR21,thiscorrespondenceisconsideredtoalsodischargeanyformalresponsibilityPP&Lmayhaveforreportingincompliancethereto.go/15PENNSYLVANIAPOWER4LIGHTCOMPANY//g Mr.BoyceH.GrierJune23,1980PP&LandBechtelarecontinuingtoanalyzetheproblemandtoestablishanacceptablecorrectiveactionplan.Baseduponthesatisfactorycompletionofourinvestigation,wewilladvisetheCommissionofthedatebywhichafinalreportwillbesubmittedshouldtheconditionsbedeterminedtobereportable.N.W.CurtisVicePresident-Engineering6Construction-NuclearFLW:mcbcc:Mr.VictorStello(15)DirectorWfficeofInspection6EnforcementU.S.NuclearRegulatoryCommissionWashington,D.C.20555Mr.G.McDonald,DirectorOfficeofManagementInformation6ProgramControlU.S.NuclearRegulatoryCommissionWashington,D.C.20555Mr.RobertM.GalloU.S.NuclearRegulatoryCommissionP.0.Box52Shickshinny,Pennsyl'vania18655